Show simple item record

dc.contributor.authorKalay, Işıl
dc.contributor.authorYiğit, Deniz
dc.contributor.authorGüllü, Mustafa
dc.contributor.authorDepci, Tolga
dc.contributor.authorToppare, Levent
dc.contributor.authorHacıoğlu, Şerife Özdemir
dc.date.accessioned2020-12-07T07:59:53Z
dc.date.available2020-12-07T07:59:53Z
dc.date.issued2020en_US
dc.identifier.citationKalay, I., Yiğit, D., Güllü, M., Depci, T., Toppare, L., Hacioglu, S.O. (2020). Enhancing electrochemical and electrochromic performances of carbazole comprising monomer via copolymerization with 3,4-ethylenedioxythiophene (EDOT). Synthetic Metals, 267, art. no. 116449. https://doi.org/10.1016/j.synthmet.2020.116449en_US
dc.identifier.urihttps://doi.org/10.1016/j.synthmet.2020.116449
dc.identifier.urihttps://hdl.handle.net/20.500.12508/1447
dc.description.abstractIn this study, two novel electrochromic copolymers (CoP1.3 and CoP1.5) were synthesized via electrochemical methods and characterized. The comonomers used in the synthesis were 3,4-ethylenedioxythiophene (EDOT) and a carbazole comprising monomer; 9-(2-(4-(Phenyldiazenyl) phenoxy) ethyl)-3,6-di(thiophen-2-yl)-9H-carbazole (M1). Carbazole containing monomer (M1) and EDOT were combined with two different comonomer feed ratios, 1: 3 and 1: 5 respectively in order to investigate the effect of increasing EDOT amount on electrochemical, spectroelectrochemical and electrochromic behaviors. The electrochemical and spectroelectrochemical characterizations of the electrochemically obtained copolymers were performed by cyclic voltammetry (CV) and UV-vis-NIR spectrophotometry. Both copolymers exhibited p-type doping with reversible oxidation potentials reported at 0.23 V/0.93 V for CoP1.3 and 0.30 V/0.98 V for CoP1.5. The difference between these oxidation potentials could be dedicated to the difference in electron density in the copolymer chains. Optical band gap values were calculated from neutral state absorptions as 1.21 eV and 1.18 eV for CoP1.3 and CoP1.5, respectively. Due to the higher EDOT amount in the copolymer backbone, the band gap for CoP1.5 is lower than that of CoP1.3. Both CoP1.3 and CoP1.5 exhibited multichromic behavior with different colors in the neutral and oxidized states. While both copolymers (CoP1.3 and CoP1.5) exhibited purple color in the neutral states, the colors turned to blue colors upon applied potentials. Optical contrast values were calculated as 31 % (at 555 nm), 55 % (at 1050 nm) and 38 % (at 1240 nm) for CoP1.3 and 34 % (at 565 nm), 25 % (at 975 nm) and 45 % (at 1170 nm) for CoP1.5. As a result of electrochromic switching studies, switching times (oxidation) were calculated as 2.5 s, 1.7 s, 1.9 s for CoP1.3 and 1.9 s, 1.8 s, 2.7 s for CoP1.5. Furthermore, addition of EDOT unit into copolymer backbone resulted in the obvious improvements in electrochemical, optical, electrochromic and kinetic properties. Copolymers exhibited full visible absorption with red-shifted neutral state absorption, lower optical band gap values compared to those of homopolymers.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.isversionof10.1016/j.synthmet.2020.116449en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCopolymerizationen_US
dc.subjectCarbazoleen_US
dc.subjectElectrochromismen_US
dc.subjectElectrochemical polymerizationen_US
dc.subject3, 4-Ethylenedioxthiophene (EDOT)en_US
dc.subject.classificationMaterials Science
dc.subject.classificationMultidisciplinary
dc.subject.classificationPhysics
dc.subject.classificationCondensed Matter
dc.subject.classificationPolymer Science
dc.subject.classificationElectrochromic Devices | Viologens | Stille Reaction
dc.subject.otherPolymers
dc.subject.otherPolymerization
dc.subject.otherDerivatives
dc.subject.otherDithienylpyrrole
dc.subject.otherAzobenzene
dc.subject.otherFluorescein
dc.subject.otherCoumarin
dc.subject.otherCyclic voltammetry
dc.subject.otherEnergy gap
dc.subject.otherMonomers
dc.subject.otherOptical band gaps
dc.subject.otherOxidation
dc.subject.otherPolycyclic aromatic hydrocarbons
dc.subject.otherRed Shift
dc.subject.otherSpectroelectrochemistry
dc.subject.otherELectrochemical methods
dc.subject.otherElectrochromic behavior
dc.subject.otherElectrochromic copolymers
dc.subject.otherElectrochromic performance
dc.subject.otherElectrochromic switching
dc.subject.otherSpectroelectrochemical
dc.subject.otherSpectroelectrochemical characterization
dc.titleEnhancing electrochemical and electrochromic performances of carbazole comprising monomer via copolymerization with 3,4-ethylenedioxythiophene (EDOT)en_US
dc.typearticleen_US
dc.relation.journalSynthetic Metalsen_US
dc.contributor.departmentMühendislik ve Doğa Bilimleri Fakültesi -- Enerji Sistemleri Mühendisliği Bölümüen_US
dc.contributor.departmentMühendislik ve Doğa Bilimleri Fakültesi -- Petrol ve Doğalgaz Mühendisliği Bölümü
dc.identifier.volume267en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.isteauthorKalay, Işıl
dc.contributor.isteauthorDepci, Tolga
dc.contributor.isteauthorHacıoğlu, Şerife Özdemir
dc.relation.indexWeb of Science - Scopusen_US
dc.relation.indexWeb of Science Core Collection - Science Citation Index Expanded


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record